S
M
T
W
T
F
S
30
72°
52°
31
71°
52°
1
71°
51°
2
70°
52°
3
67°
51°
4
65°
46°
5
63°
45°
6
63°
48°
7
64°
50°
8
63°
48°
9
62°
44°
10
62°
45°
11
63°
46°
12
61°
50°
13
62°
49°
14
61°
47°
15
63°
46°
16
61°
44°
17
60°
45°
18
63°
49°
19
61°
49°
20
64°
49°
21
Hist. Avg.
59°
44°
22
Hist. Avg.
59°
44°
23
Hist. Avg.
59°
44°
24
Hist. Avg.
58°
44°
25
Hist. Avg.
58°
44°
26
Hist. Avg.
57°
43°
27
Hist. Avg.
57°
43°
28
Hist. Avg.
57°
43°
29
Hist. Avg.
56°
43°
30
Hist. Avg.
56°
43°
1
Hist. Avg.
55°
42°
2
Hist. Avg.
55°
42°
3
Hist. Avg.
55°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hartley Bay
Hartley Bay's September 2026 forecast shows daily high temperatures ranging from 60° to 72°, with overnight lows between 44° and 52°. The average high for September is 64° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Hartley Bay. See also: October | November | December.
